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4733 ORO (1982 HB2)
Classification: Main-belt Asteroid          SPK-ID: 2004733
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07317303400212277 6.0289e-08  
a 2.185564077197127 9.5627e-09 au
q 2.025639722662563 1.3172e-07 au
i 4.716009867593983 5.8027e-06 deg
node 43.04315656676179 6.5205e-05 deg
peri 158.2246497810244 7.4096e-05 deg
M 170.4637631682216 3.7026e-05 deg
tp 2456841.678233868445
(2014-Jul-03.17823387)
0.00012108 JED
period 1180.167749839185
3.23
7.7456e-06
2.121e-08
d
yr
n .3050413808113764 2.002e-09 deg/d
Q 2.34548843173169 1.0262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1367  
   data-arc span      23378 days (64.01 yr)  
   first obs. used      1951-11-30  
   last obs. used      2015-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5152  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:53:29  

Additional Information
 Earth MOID = 1.02229 au 
 Jupiter MOID = 2.61175 au 
 T_jup = 3.669 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO253395  
rotation period rot_per 5.8796 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4733 ORO (1982 HB2)          Discovered 1982-Apr-19 by Oak Ridge Obs. at Harvard
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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